<template>
  <div>
    <div class="weui-search-bar">
      <div class="weui-search-bar__form">
        <div class="weui-search-bar__box">
          <i class="weui-icon-search"/>
          <input
            class="weui-search-bar__input"
            :placeholder="placeholder"
            :autofocus="autofocus"
            v-model="currentValue"
            ref="input"
          >
          <div class="weui-icon-clear" @click="clear"/>
        </div>
        <label class="weui-search-bar__label" @click="textClick" v-show="!isActive">
          <i class="weui-icon-search"/>
          <span v-text="placeholder"/>
        </label>
      </div>
      <div
        class="weui-search-bar__cancel-btn"
        @click="cancel"
        v-show="isActive"
        v-text="cancelText"
      />
    </div>

    <slot>
      <div
        class="weui-cells searchbar-result"
        v-show="show || currentValue"
      >
        <wv-cell
          v-for="(item, index) in result"
          :key="index"
          :title="typeof item === 'object' ? item[resultTextKey] : item"
          @click="$emit('click-result', item)"
        />
      </div>
    </slot>
  </div>
</template>

<script>
import { create } from '../../utils'
import Cell from '../cell/index'

export default create({
  name: 'wv-search-bar',

  components: {
    Cell
  },

  props: {
    value: String,
    autofocus: Boolean,
    show: Boolean,
    placeholder: {
      type: String,
      default: '搜索'
    },
    cancelText: {
      type: String,
      default: '取消'
    },
    resultTextKey: String,
    result: Array
  },

  data () {
    return {
      isActive: false,
      currentValue: this.value
    }
  },

  mounted () {
    if (this.autofocus) {
      this.isActive = true
    }
  },

  methods: {
    textClick () {
      // focus the input
      this.$refs.input.focus()
      this.isActive = true
    },

    // 清除输入
    clear () {
      this.currentValue = ''
    },

    // 取消搜索
    cancel () {
      this.clear()
      this.isActive = false
    }
  },

  watch: {
    currentValue (val) {
      this.$emit('input', val)
    },

    value (val) {
      this.currentValue = val
    }
  }
})
</script>

<style scoped lang="scss">
  .weui-search-bar__label {
    transform-origin: 0px 0px 0px;
    opacity: 1;
    transform: scale(1, 1);
  }

  .weui-search-bar__cancel-btn {
    display: block;
  }

  .searchbar-result {
    display: block;
    transform-origin: 0px 0px 0px;
    opacity: 1;
    transform: scale(1, 1);
    margin-top: 0;
    font-size: 14px;
  }
</style>
